Quick overlay question

Well, it really boils down to how it works? Do you replace an entire
function in the overlay, the entire .pm file, or what?

Well, it really boils down to how it works? Do you replace an entire
function in the overlay, the entire .pm file, or what?

there is description of this here:

http://wiki.bestpractical.com/view/CustomizingWithOverlays

In overlay, you override methods.

You can look in RT modules for examples, there is some that use overlay.